Joseph m



a i J MPI-TIERS. PHOTO-uTHOGRAPHER. WASHINGTON D C specification, in which'- @uitrit tatre datent @fitr-.

JOSEPH M. STONE, OF NORTH ANDOVER, MASSACHUSETTS, ASSIGNOR TO HIMSELF. GEORGE L. DAVIS, AND JOHN yA, WILEY, OF SAME PLAGE.

Laim Palm No. 79,872, daad Juzg 14, 1868.

IMPROVEMENT IN CARD-CYLINDERS.

TO ALL WHOM 1T MAY OONCERN:

Be it known Vthat I, JOSEPH M. STOIN-E, of Northi'Andover, in' the county of Essex, and State of Massachusetts, have inventedl a new and improved Metallic Cylinder for Carding-Machines, and a new Method of Forming `the Moulds for Casting, the Same; and I do hereby declare that the following is a full, clear, and exact description of the sa1etaken in connection with the accompanying drawings, making apartof this Figure frepresents the usual metterci-constructing card-cylinders of cast iron, with the upper half in section, the lower half in elevation.

Figure 2 represents my improved cylinder, drawn in the same'manner, with the method of fcrmingthe moulds for casting the same shown inzblue lines; and

Figure 3 is'a cross-section ofl the cylinder between the arms. l.

The subject-matter oi"y my invention relates to the construction of metallic cylinders for carding-machines, as a substitte for the cylinders heretofore usedfbut more especially for the main cylinder, so called. These cylinders,las ordinarily constructed, when made of cast iron, are made up of two sections, accurately fitted and bolted-together by flanges, end to end, and placed on a shaft, and then turned olf true on thcoutside, each sectionhaving a spider or set of` arms cast linY it to receive the shaft, in the manner shown in iig. 1 of the drawings.V But-by my new modeoi` constructionthe cylinder is cast entire in `one piece, with a thin shell and a series of spiders or sets of arms (three-for more) cast in it, at suitable distance apart to receive the shaft, as

is shown in iigs. 2 and 3 of the drawings.

4By this-means I am enabledto .construct the cylinders of less weight and much cheaper, andalso prevent the tremor of either the cylinder or its shaft when in operation.

.A is the cylindrical shell, and B B the spiders or sets of arms,into the central bosses of which the shaft C is tted in the usual manner.

In iig. 2, the cylinder is represented as having four sets of arms, but for carding-oylinders of the ordinary length three sets 'would be suiiicient. l

The method in which a mould for such a cylinder is made is as follows: I prepareantiron flask, circular in form, a little longer than the extension of-the cylinder, so as to have a rather thin layer of sand between it and the pattern, with a. nowcl, cope,and as many cheeks or middle pieces as there are spaces between the spiders -or sets 4of arms, and each check of a depth equal to the distance apartof the spider-s. The outline of the flask and itsp'artings are shown by the blue line in iig. 2, in which a are the newels, b b I) the cheeks, and-c the cope;

d d d d the sprues, and e e e e gatings at each set of arms.

The piittern is -madeiof a piece'of cylindrical shell, about the length of the distance between the spiders, as fromf to g, a short piece of shell of a length equal to the part projecting beyond the spider, as fromf to h, and a'piece oi" shell long enough to form the other end of the cylinder, with a riser to receive the stodge, as from z' to j, (part oi' which is to be afterward cut od`,) and a pattern for the sets of arms or spiders.

The newel is first rammed up with the short piece of cylinder and the spider-pattern in the usual way and turned over. The first cheek andlong piece of shell-pattern are then put on and rammed up. The cheekis hen lifted offend the patterns in the newel drawn, and that part ofthe mould finished. The cheek is then put back and the second cheek-flask is put on. The shell-pattern is then drawn part way up, and the spider-pattern put, in again and bedded at the proper place. The second cheek is then removed for part of the depth, and then the shell-pattern is drawn up till its top is even with tbc top, of" the cheek, when the ramming-up of' the cheek is completed. vThe cheek is then'lifted dit and the spider-pattern drawn and the mould nished up. -Thecheek is then replaced, and if foin' sets ot' arms are to be made, the operation with the last cheek is to be repeated with the third cheek; but if three spiders only are to be made the spider-pattern is to be put in and the copepiece of the shell s to be put n, and the dope-piece of flask is to be pub on and rammed up. The cpe is then lifted olf and patterns are to be drawn and the mould finished up and then closed.

A The metal is to be' ru'n into the moulll through four, sprues, mere or less, which I prefer to have pass through theopenng between the arms, as at d, iig. 3, and grted inte each. arm, as is shown at e, se that'. the metal will -lowthrouglreach spider successively us the mould lls.

Bythis mode of operation, bygvaryiyng the'depth und number of. Ythe cheeks, the cylinder can be mud'e of the length und with the number of spiders desired.

Having thus described my invention, what I claim ns new, and desire to secure by Letters Patent, is-

A card-cylinder, formed of a. thinshell, with three or more spiders 01j sets of arms in lthe same, all cast in 'one piece, substantially as described, use. new manufacture.

Executed, March twenty-sixth, 1868.

JOSEPH M. STONE.

Witnesses:

JOSEPH H. STONE, JAMES HFDAVIS. 

